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getTimeSeries: option “withLatsLons”

24 February 2015   //   by admin   //   getTimeSeries  //  Comments (0)

Add latitude and longitude coordinate to each date (line of the data frame) for the extracted time series.

> library(RWikience)
> w<-WikienceConnect()
Lookup : //localhost:8001/CWikienceRMIServer
RMI object found
> queryTimeSeries(w, "MERRA.Precipitation.Total", "01 01 1979", "01 08 2014", 12.0, -54.0, 12.0,-56.0 )
> getTimeSeriesPointsLatsLons(w)
  lat       lon
1  12 -56.00000
2  12 -55.33334
3  12 -54.66667
4  12 -54.00000
> getTimeSeriesPointCount(w)
[1] 4

 

Without “withLatsLons”

> t <- getTimeSeries(w, 0)
> head(t, T)
        date        value
1 1979-01-01 2.231096e-06

 

With “withLatsLons”

> t <- getTimeSeries(w, 0, withLatsLons = TRUE)
> head(t, T)
        date        value lat lon
1 1979-01-01 2.231096e-06  12 -56

 

Code used on this page:

AIR-Q-GOV

21 February 2015   //   by admin   //   Reports  //  Comments (0)

AIR-Q-GOV

Averin G.V., Rodriges Zalipynis R.A., Pollutant Emissions Inventory and Air Quality Monitoring in Ukraine – AIR-Q-GOV Report Supplement: MWH SA, La Hulpe, Belgium, 2012. – 38 pp.
PDF ~ 300 KB
Full report at www.airgovernance.eu

Hurricane Iniki

21 February 2015   //   by admin   //   Hurricane Wind Swaths  //  Comments (0)

Category 4 major hurricane (SSHWS/NWS)
Formed September 5, 1992
Dissipated September 13, 1992
Fatalities 6 direct
Damage $1.8 billion (1992 USD)
Areas affected Hawaiʻi (particularly Kauaʻi)
Part of the 1992 Pacific hurricane season

iniki

PNG | GeoTIFF

Open GeoTIFF in Quantum GIS

20 February 2015   //   by admin   //   Video Tutorials  //  Comments (0)

This video tutorial shows how to open a GeoTIFF file in Quantum GIS. Below is a screenshot of Quantum GIS with imported GeoTIFF for hurricane Katrina wind speed swath and OpenStreetMap layer to better perceive the geographical context.

cw_katrina_qgis

Video tutorial importing GeoTIFF to Quantum GIS:
note: the missing value for the GeoTIFF is set to -1 what explains the step in the tutorial where we set the additional missing value.

Feel free to post comments/questions.

Hurricane Katrina

20 February 2015   //   by admin   //   Hurricane Wind Swaths  //  Comments (0)

CW_Katrina_Swath_full_NO_LATS

PNG | GeoTIFF

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